The debris has been cleared and the session is back underway. Piastri, Ocon, Sainz and Tsunoda all take to the circuit.
19:41
FP1 back underway
19:40
The reason for the red flag
19:36
Verstappen
Verstappen had gone to the top of the timesheets with a 1m20.970s, 0.8s ahead of Bottas.
Piastri, Ocon and O'Ward complete the top five currently.
19:35
Red flag
There's some debris on the start-finish straight so the session has been put on hold.
19:34
Early times on the board
Bottas leads the way with a 1m21.806s, 0.6s ahead of Piastri.
19:31
FP1 is underway
The first 60-minute practice session of the weekend is underway in Mexico.
19:18
A big upgrade on the McLaren
19:13
A number of driver changes for FP1
Mercedes: Antonelli for Hamilton
Ferrari: Bearman for Leclerc
McLaren: O'Ward for Norris
Aston Martin: Drugovich for Alonso
Sauber: Shwartzman for Zhou
19:11
Welcome
Hello everyone and welcome to the Crash.net live blog for Friday practice at the Mexico City Grand Prix.
FP1 kicks off in just under 20 minutes' time in Mexico.